Global 200
The Global 200 is the list of ecoregions identified by the World Wildlife Fund (WWF) as priorities for conservation. According to the WWF, an ecoregion is defined as a "relatively large unit of land or water containing a characteristic set of natural communities that share a large majority of their species, dynamics, and environmental conditions (Dinerstein et al. 1995, TNC 1997)."
The WWF assigns a conservation status to each ecoregion in the Global 200: critical or endangered; vulnerable; and relatively stable or intact. Over half of the ecoregions in the Global 200 are rated endangered.
Background
The WWF has identified 867 terrestrial ecoregions across the Earth's land surface, as well as freshwater and marine ecoregions. The goal of this classification system is to ensure that the full range of ecosystems will be represented in regional conservation and development strategies. Of these ecoregions, the WWF selected the Global 200 as the ecoregions most crucial to the conservation of global biodiversity. The Global 200 list actually contains 238 ecoregions, made up of 142 terrestrial, 53 freshwater, and 43 marine ecoregions.
Conservationists interested in preserving biodiversity have generally focused on the preservation of tropical moist broadleaf forests (commonly known as tropical rainforests) because it is estimated that they harbor one half of Earth's species. On the other hand, the WWF determined that a more comprehensive strategy for conserving global biodiversity should also consider the other half of species, as well as the ecosystems that support them.
Several habitats, such as Mediterranean forests, woodlands, and scrub biome, were determined to be more threatened than tropical rain forests, and therefore require concerted conservation action. WWF maintains that "although conservation action typically takes place at the country level, patterns of biodiversity and ecological processes (e.g., migration) do not conform to political boundaries", which is why ecoregion-based conservation strategies are deemed essential.
Classification
Historically, zoologists and botanists have developed various classification systems that take into account the world's plant and animal communities. Two of the worldwide classification systems most commonly used today were summarized by Miklos Udvardy in 1975.
The Earth's land surface can be divided into eight biogeographical realms (formerly called kingdoms, and which the WWF calls ecozones) that represent the major terrestrial communities of animals and plants, and are a synthesis of previous systems of floristic provinces and faunal regions. The biome system classifies the world into ecosystem types (i.e. forests, grasslands, etc.) based on climate and vegetation. Each biogeographical realm contains multiple biomes, and biomes occur across several biogeographical realms. A system of biogeographical provinces was developed to identify specific geographic areas in each biogeographical realm that were of a consistent biome type, and shared distinct plant and animal communities. The WWF system represents a further refinement of the system of biomes (which the WWF calls "major habitat types"), biogeographical realms, and biogeographical provinces (the WWF scheme divides most biogeographical provinces into multiple smaller ecoregions).
Selection process
Based on a comprehensive list of ecoregions, The Global 200 includes all major habitat types (biomes), all ecosystem types, and species from every major habitat type. It focuses on each major habitat type of every continent (such as tropical forests or coral reefs). It uses ecoregions as the unit of scale for comparison. WWF say ecoregions could be considered as conservation units at regional scale because they meet similar biological communities.
Some ecoregions were selected over other ecoregions of the same major habitat type (biome) or ecozone. Selection of the Global 200 relied on extensive studies of 19 terrestrial, freshwater, and marine major habitat types. Selection of the ecoregions was based on analyses of species richness, species endemism, unique higher taxa, unusual ecological or evolutionary phenomena, and global rarity of major habitat type.
Global 200 ecoregion list is most helpful to conservation efforts at a regional scale: local deforestation, destruction of swamp habitats, degradation of soils, etc. However, certain phenomena, such as bird or whale migration, depend on more complex parameters not used to define the current database, such as atmospheric currents and dynamic pelagic ecosystems. These would require gathering more information, and co-ordination of efforts between multiple ecoregions. However, the Global 200 ecoregions can help these efforts by identifying habitat sites and resting sites for migratory animals. It may also help identify the origin of invasive species, and offer insights for slowing down or stopping their intrusion.
Tropical and subtropical moist broadleaf forests
- South Western Ghats montane rain forests and moist deciduous forests
- Sri Lanka moist forests
- Northern Indochina Subtropical moist forests
- Southeast China-Hainan moist forests
- IM0149 South China-Vietnam subtropical evergreen forests
- IM0169 Hainan Island monsoon rain forests
- Taiwan montane forests
- Annamite Range moist forests (Cambodia, Laos, Vietnam)
- IM0136 Northern Annamites rain forests
- IM0152 Southern Annamites montane rain forests
- Sumatran Islands lowland and montane forests
- IM0157 Sumatran freshwater swamp forests
- IM0158 Sumatran lowland rain forests
- IM0159 Sumatran montane rain forests
- IM0160 Sumatran peat swamp forests
- Philippines moist forests
- IM0114 Greater Negros-Panay rain forests
- IM0122 Luzon montane rain forests
- IM0123 Luzon rain forests
- IM0128 Mindanao montane rain forests
- IM0129 Mindanao-Eastern Visayas rain forests
- IM0130 Mindoro rain forests
- IM0156 Sulu rain forests
- Palawan moist forests
- IM0143 Palawan rain forests
- Kayah-Karen/Tenasserim moist forests
- Peninsular Malaysian lowland and montane forests
- Borneo lowland and montane forests
- Nansei Shoto Archipelago forests (Japan)
- Eastern Deccan Plateau moist forests (India)
- Naga - Manipuri - Chin Hills moist forests (Bangladesh, India, Myanmar)
- Cardamom Mountains moist forests
- Western Java montane forests
- IM0167 Western Java montane rain forests
- Maldives-Lakshadweep-Chagos Archipelago tropical moist forests
- IM0125 Maldives-Lakshadweep-Chagos Archipelago tropical moist forests
- Greater Antillean moist forests
- Talamancan-Isthmian Pacific forests
- Choco - Darien moist forests
- NT0115 Choco-Darien moist forests
- Northern Andean montane forests
- NT0145 Northwestern Andean montane forests
- Coastal Venezuela montane forests
- NT0147 Orinoco Delta swamp forests
- NT0169 Tepuis
- NT0171 Trinidad and Tobago moist forests
- Guianan moist forests
- NT0125 Guianan moist forests
- Napo moist forests
- NT0142 Napo moist forests
- Rio Negro - Jurua moist forests
- NT0132 Japura-Solimoes-Negro moist forests
- NT0133 Jurua-Purus moist forests
- NT0158 Rio Negro campinarana
- Guayana Highlands moist forests
- NT0124 Guayanan Highlands moist forests
- Central Andean yungas
- Southwestern Amazonian moist forests
- Atlantic forests
Afrotropic
Australasia
Indomalaya
- Indochina dry forests
- Chhota - Nagpur dry forests
Neotropic
- Mexican dry forests
- Tumbesian - Andean valleys dry forests (Colombia, Ecuador, Peru)
- NT0214 Ecuadorian dry forests
- NT0221 Magdalena Valley dry forests
- NT0223 Marañón dry forests
- NT0232 Tumbes-Piura dry forests
- Chiquitano dry forests
- Atlantic dry forests
Oceania
- Sierra Madre Oriental and Occidental pine-oak forests
Neotropic
Australasia
- Eastern Australia temperate forests
- Tasmanian temperate rain forests
- New Zealand temperate forests
Indomalaya
- Eastern Himalayan broadleaf and conifer forests
- Western Himalayan temperate forests
Nearctic
- Appalachian and mixed mesophytic forests
- Southwest China temperate forests
- PA0417 Daba Mountains evergreen forests
- PA0434 Qin Ling Mountains deciduous forests
- PA0437 Sichuan Basin evergreen broadleaf forests
- Russian Far East temperate forests
- PA0426 Manchurian mixed forests
- PA0443 Ussuri broadleaf and mixed forests
Nearctic
- Pacific temperate rain forests
- Klamath - Siskiyou forests
- Sierra Nevada forests
- Southeastern coniferous and broadleaf forests
- NA0529 Southeastern conifer forests
Neotropic
Palearctic
Nearctic
- Muskwa / Slave Lake boreal forests
- Canadian Boreal Forests
Palearctic
- Ural Mountains taiga
- PA0610 Urals montane tundra and taiga
- East Siberian taiga
- Kamchatka taiga and grasslands
- PA0603 Kamchatka-Kurile meadows and sparse forests
- PA0604 Kamchatka-Kurile taiga
- painga mountains taiga
Afrotropic
- Horn of Africa acacia savannas
- AT0715 Somali Acacia-Commiphora bushlands and thickets
- East African acacia savannas
- AT0711 Northern Acacia-Commiphora bushlands and thickets
- Central and Eastern miombo woodlands
- Sudanian savannas
Australasia
Indomalaya
- Terai-Duar savannas and grasslands
Neotropic
- Llanos savannas
- Cerrado woodlands and savannas
Australasia
- Central Range subalpine grasslands
Nearctic
Neotropic
Palearctic
- Daurian steppe
- PA0804 Daurian forest steppe
Afrotropic
Indomalaya
Neotropic
Afrotropic
- Ethiopian Highlands
- Southern Rift montane woodlands
- AT1015 Southern Rift montane forest-grassland mosaic
- East African moorlands
- Drakensberg montane shrublands and woodlands
Indomalaya
- Kinabalu montane shrublands
Neotropic
- Northern Andean paramo
- NT1006 Northern Andean paramo
- Central Andean dry puna
Palearctic
- Tibetan Plateau steppe
- PA1020 Tibetan Plateau alpine shrub and meadows
- Middle Asian montane steppe and woodlands (Afghanistan, China, Kazakstan, Kyrgyzstan, Tajikistan, Turkmenistan, Uzbekistan)
- PA1011 North Tibetan Plateau-Kunlun Mountains alpine desert
- PA1015 Qilian Mountains subalpine meadows
- PA1013 Ordos Plateau steppe
- Eastern Himalayan alpine meadows
- Alaskan North Slope coastal tundra (Canada, United States)
- Canadian low arctic tundra (Canada)
- NA1114 Low Arctic tundra
- NA1116 Ogilvie-MacKenzie alpine tundra
- NA1118 Torngat Mountain tundra
- Fenno - Scandia alpine tundra and taiga (Finland, Norway, Russia, Sweden)
- Taimyr and Siberian coastal tundra
- PA1107 Northeast Siberian coastal tundra
- PA1111 Taimyr-Central Siberian tundra
- Chukote coastal tundra (Russia)
- PA1104 Chukchi Peninsula tundra
Mediterranean forests, woodlands, and scrub
Afrotropic
Australasia
- Southwestern Australia forests and scrub
- Southern Australia mallee and woodlands
Nearctic
Neotropic
Palearctic
- Mediterranean forests, woodlands, and scrub
Afrotropic
Australasia
- Carnavon xeric scrub
- Great Sandy - Tanami deserts
Nearctic
- Sonoran - Baja deserts
- Chihuahuan - Tehuacan deserts
Neotropic
Palearctic
Afrotropic
- East African mangroves
- Gulf of Guinea mangroves
- Madagascar mangroves
Australasia
Indomalaya
- Greater Sundas mangroves
- Sundarbans mangroves
Neartic
- Northwest Mexican coast mangroves
- NA1401 Northwest Mexican coast mangroves
Neotropic
- Guianan - Amazon mangroves
- NT1401 Alvarado mangroves
- NT1402 Amapa mangroves
- NT1406 Belizean reef mangroves
- NT1411 Guianan mangroves
- NT1427 Pará mangroves
- Panama Bight mangroves
- NT1405 Belizean coast mangroves
- NT1414 Gulf of Panama mangroves
Large rivers
Afrotropic
Indomalaya
- Mekong River (Cambodia, China, Laos, Myanmar, Thailand, Vietnam)
Nearctic
Neotropic
Palearctic
Large river headwaters
Afrotropic
- Congo basin piedmont rivers and streams (Angola, Cameroon, Central African Republic, Democratic Republic of Congo, Gabon, Republic of Congo, Sudan)
Nearctic
- Mississippi piedmont rivers and streams (United States)
Neotropic
- Upper Amazon rivers and streams (Bolivia, Brazil, Colombia, Ecuador, French Guiana (France), Guyana, Peru, Suriname, Venezuela)
- Upper Paraná rivers and streams (Argentina, Brazil, Paraguay)
- Brazilian Shield Amazonian rivers and streams (Bolivia, Brazil, Paraguay)
Afrotropic
Indomalaya
Palearctic
Small rivers
Afrotropic
- Upper Guinea rivers and streams (Côte d'Ivoire, Guinea, Liberia, Sierra Leone)
- Madagascar freshwater (Madagascar)
- Gulf of Guinea rivers and streams (Angola, Cameroon, Democratic Republic of Congo, Equatorial Guinea, Gabon, Nigeria, Republic of Congo)
- Cape rivers and streams (South Africa)
Australasia
Indomalaya
Nearctic
- Southeastern rivers and streams (United States)
- Pacific Northwest coastal rivers and streams (United States)
- Gulf of Alaska coastal rivers and streams (Canada, United States)
Neotropic
- Guianan freshwater (Brazil, French Guiana, Guyana, Suriname, Venezuela)
- Greater Antillean freshwater (Cuba, Dominican Republic, Haiti, Puerto Rico)
Palearctic
- Balkan rivers and streams (Albania, Bosnia and Herzogovina, Bulgaria, Croatia, Greece, Macedonia, Turkey, Yugoslavia)
- Russian Far East rivers and wetlands (China, Mongolia, Russia)
Large lakes
Afrotropic
- Rift Valley lakes (Burundi, Democratic Republic of Congo, Ethiopia, Kenya, Malawi, Mozambique, Rwanda, Tanzania, Uganda, Zambia)
Neotropic
- High Andean lakes (Argentina, Bolivia, Chile, Peru)
Palearctic
Small lakes
Afrotropic
- Cameroon crater lakes (Cameroon)
Australasia
- Lakes Kutubu and Sentani (Indonesia, Papua New Guinea)
- Central Sulawesi lakes (Indonesia)
Indomalaya
- Philippines freshwater (Philippines)
- Inle Lake (Myanmar)
- Yunnan lakes and streams (China)
Neotropic
- Mexican highland lakes (Mexico)
Xeric basins
Australasia
- Central Australian freshwater (Australia)
Nearctic
Palearctic
- Anatolian freshwater (Syria, Turkey)
Global 200 Marine ecoregions
Polar
- Antarctic Peninsula & Weddell Sea
- Bering Sea (Canada, Russia, United States)
- Barents-Kara Sea (Norway, Russia)
Temperate shelfs and seas
Mediterranean
- Mediterranean Sea (Albania, Algeria, Bosnia and Herzegovina, Croatia, Cyprus, Egypt, France, Greece, Israel, Italy, Lebanon, Libya, Malta, Monaco, Morocco, Serbia & Montenegro, Slovenia, Spain, Syria, Tunisia, Turkey)
- Northeast Atlantic Shelf Marine (Belgium, Denmark, Estonia, Finland, France, Germany, Ireland, Latvia, Lithuania, Netherlands, Norway, Poland, Russia, Sweden, United Kingdom)
- Grand Banks (Canada, St. Pierre and Miquelon (France), United States)
- Chesapeake Bay (United States)
North Temperate Indo-Pacific
- Patagonian Southwest Atlantic (Argentina, Brazil, Chile, Uruguay)
- Southern Australian Marine (Australia)
- New Zealand Marine (New Zealand)
North Temperate Indo-Pacific
South Temperate Atlantic
South Temperate Indo-Pacific
Central Indo-Pacific
- Western Australian Marine (Australia)
Eastern Indo-Pacific
Eastern Tropical Atlantic
- Canary Current (Canary Islands, Gambia, Guinea-Bissau, Mauritania, Morocco, Senegal, Western Sahara)
Central Indo-Pacific
- Nansei Shoto (Japan)
- Sulu-Sulawesi Seas (Indonesia, Malaysia, Philippines)
- Bismarck-Solomon Seas (Indonesia, Papua New Guinea, Solomon Islands)
- Banda-Flores Sea (Indonesia)
- New Caledonia Barrier Reef (New Caledonia)
- Great Barrier Reef (Australia)
- Lord Howe-Norfolk Islands Marine (Australia)
- Palau Marine (Palau)
- Andaman Sea (Andaman and Nicobar Islands (India), Indonesia, Malaysia, Myanmar, Thailand)
Eastern Indo-Pacific
- Tahitian Marine (Cook Islands, French Polynesia)
- Hawaiian Marine (Hawaii)
- Rapa Nui (Easter Island)
- Fiji Barrier Reef (Fiji)
Western Indo-Pacific
- Maldives, Chagos, and Lakshadweep atolls (Chagos Archipelago (United Kingdom), India, Maldives, Sri Lanka)
- Red Sea (Djibouti, Egypt, Eritrea, Israel, Jordan, Saudi Arabia, Sudan, Yemen)
- Arabian Sea (Djibouti, Iran, Oman, Pakistan, Qatar, Saudi Arabia, Somalia, United Arab Emirates, Yemen)
- East African Marine (Kenya, Mozambique, Somalia, Tanzania)
- West Madagascar Marine (Comoros, Madagascar, Mayotte and Iles Glorieuses (France), Seychelles)
Western Tropical Atlantic
- Mesoamerican Barrier Reef System (Belize, Guatemala, Honduras, Mexico)
- Greater Antillean Marine (Bahamas, Cayman Islands, Cuba, Dominican Republic, Haiti, Jamaica, Puerto Rico, Turks and Caicos Islands, United States)
- Southern Caribbean Sea (Aruba, Colombia, Netherlands Antilles, Panama, Trinidad and Tobago, Venezuela)
- Northeast Brazil Shelf Marine (Brazil)
Priority Places (19)
- Amazon - World’s largest tropical rain forest and river basin
- Amur-Heilong - Refuge for the world’s great cats
- The Arctic - Protecting Arctic Environments
- Borneo and Sumatra - Priceless forests harbor untold species
- Chihuahuan Desert - Protecting the balance of a desert
- Coastal East Africa - Improving livelihoods by conserving nature
- Congo Basin - Protecting Africa’s tropical forests
- Coral Triangle - Home to the world’s most abundant variety of corals and sea life
- Eastern Himalayas - Empowering communities to protect sacred lands
- The Galápagos - The world’s most treasured islands
- Gulf of California - Protecting the world’s aquarium
- Madagascar - Safeguarding one of Earth’s most captivating islands
- Mekong - Protecting the river of life from source to sea
- Mesoamerican Reef - The Atlantic Ocean’s largest coral reef
- Namibia - Empowering communities to manage their natural resources
- Northern Great Plains - Restoring the great American prairie
- U.S. Southeast Rivers and Streams - Safeguarding America's richest source of freshwater
- Southern Chile - A land of ancient forests and abundant oceans
- Yangtze - Sustaining a valley of life
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Terrestrial
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Polar/montane
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Temperate
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(Sub)tropical
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Dry
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Wet
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Aquatic
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Other biomes |
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Ecozones |
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See also
External links